Caster



A. H. ROTH.

CASTER. n APPLICATION FILED IIIAYIz. 1921. Y

1,407,171, Patented Feb. 21, 19.22.

Angl/fg B WAM v Afro/wer p the sphere retainingcage.

ras i Ararorriee;

AUGUST H. ROTE, OFVNEW YORK, N. Y.

Specification of Letters Patent.

oAsTEn.

Patented Feb. '21, 1922..

Application led May 12, 1921. Serial No. 469,039.

Another object of the invention resides in the provision of a caster the rotating element of which comprises a sphere arranged` to operate against a ball race and having release-ble means for retaining the sphere in place in the cage.

With these and other objects in view the invention consists in the novel construction, combination and arrangement' of parts which will be fully set forth in the following specification, claimed and illustrated in the accompanying drawing, in which,`

Figure 1 is a top plan view of the caster,

Figure 2 is a vertical `sectional jview through Figure l,

Figure 3 is a bottom plan view of Figure 1,

Y Figure el'is a sectional view on line 4 4 of Figure 2, and,

Figure 5 is a side view in elevation of Referring to the drawings in detail the numeral 10 designatesthe attaching plate of the device having a central opening 1lformed therein. A plurality of openings "l2 are arranged in the plate intermediate its outer and inner edge for the reception of a suitable attaching means such as screws. Formed integrally with the under side of the plate is a tubular cage member `13 formed near itslowerend with. a plurality of slots 14 the walls of which areV inclined .as shown in Figure 4 for a purpose to be more fully hereinafter described.

Rotatably arranged adjacent `the lower end of the cage member 18 is a ring 15 formed with a plurality of recesses 16 in which the retainingtongues 17 are pivoted..`

As shown in Figure it the free ends ofthe tongues are adapted to enter the slots 14 so that when the ring is rotated in a clockwiseV r direction their ends will engage Vthe inclined walls of the slots and be guided inwardly Aso that the said tongues will project through ,the slots and into the cage as shown in Figures 2` and 3.

A spherical bearingmember or rol1er18` isadapted to be'reeeived within the cage Vand engage an annular series of bearing balls 19 arranged in a suitable ball retainer 2O which vbears against the under side of the l plate 10. Y

Obviously the spherical member 18will be retained against accidental displacement by the tongues l17 and when it is so desired the said spherical member Amay lbe removed by rotating the ring 15 in acounter-clockwise direction, .thereby withdrawing the tongues. While in the foregoing there has been shown and described the preferred embodi;I y

ment of this invention, it is to be under;

stood that minor changes in the ldetails of y construction, combination and arrangement of parts may be made without departing from the spiritand scope of the invention as claimed. A

What is claimed is:

Acaster comprising, an attachingplate',

a tubular cage depending from the plate`,a

`spherical bearing member adapted to be re'- 'ceived in the cage,v the cage having slots formed near its lower end; tongues adapted to be projected through thek slots, a ring surrounding the cage and connected to the tongues for projecting andwithdrawing the Y same, and anti-friction bearings at the up-l per end of the cage against which the bear-y ing member run v ln witness whereof l affix my sienature.

AUGUST H. RTH, l 

